Knife-sharpener.



G. B. N. DOW 81' J. F. GAVANAUGH.

KNIFE SHABPENER. APPLICATION FILED SEPTA. 1914.

27 Patented Feb. 9, 1915.

Witnesses Inventors Attorneys.

"in-arr sra'rns aranr opinion.

GEORGE B. N. DOW AND JAMES F. CAVANAUGH, OF MANCHESTER, NEW HAMPSHIRE.

KNIFE-SHARPENER.

Specification of Letters Patent.

Patented Feb. e, leis.

Application filed September 4, 1914. Serial No. 860,285.

To all whom it may concern Be it known that we, Gnonen Bi N. Dow andJames F. GAVANAUGH', citizens of the United States, residing atManchester, in the county of Hillsboro, State of New l'lampshire, haveinvented a new and useful Knife-Sharpener, of which the following is aspecification.

The device forming the subject matter of this application is asharpening implement of that general type shown in Patent No. 1,016,615,granted on the sixth day of February, 1.912, to the present applicantGeorge B. Dow jointly with one Walsh.

The present invention aims to' improve the structure shown in the patentabove mentioned, by reducing the number of parts andsimplifying thestructure.

Another object of the invention is to provide a construction in whichone of the cutting notches only, is open at a time, it being possible toclose both of the cutting notches, at the will of the operator.

The invention aims to improve generally and to enhance the utility ofdevices of that type to which the present invention appertains. r

With the above and other objects in View which will appear as thedescription proceeds, the invention resides in the combination andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of the invention herein disclosed can be made within thescope of what isclaimed without departing from thespirit of theinvention.

In the accompanying drawings :F igure 1 is an end elevation depictingthe sharpeiiing instrument forming the subject matter of thisapplication; Fig. 2 shows the sharpener in side'elevation; Fig. 3 is atop plan thereof; Fig. 4: is a bottom plan of the sharpener; Fig. 5 is aperspective of the support, the same being inverted; Fig. 6 is aperspective showing one of the sharpening blades.

The sharpener herein disclosed preferably is fashioned from metalthroughout and em bodies a bed plate 1 provided in its opposite edgeswith notches 2. The bed plate 1 is reduced in width to fashion anintegrally formed handle 3 which intermediate its ends is bentdownwardly as shown at 1.

The invention comprises an arched support shown at 5. The support 5 isprovided at its ends with a single pair of legs 6, the support extendinglongitudinally of the handle 3 and being disposed immediately below thebase plate 1. In the crown of the support 5, openings 7 are formed.Combined pivot and clamping elements 8, which may be bolts, passdownwardly through the base plate 1 and through the openings 7 in thesupport 5. To the lower ends of the bolts 8 nuts 9 are appliechthe nutbearing against the under face of the crown of the support 5.

Interposed between the bed plate 1 and the crown of the support 5 areoverlapped blades 10, the outer edges'll of which preferably are curved,the inner edges 12 of which are sharpened to form cutting elements.The'blades 10 are equipped with openings 15 through which the securingbolts Spass.

lVhen the device is not in use, or when it is being shipped asan article01"? commerce, the nuts 9 may be loosened and the sharpened cuttingedges 12 of the blades 10 may be brought into parallelism with eachother, whereupon, when the nuts 9 are tightened, one blade 10 willoverlap the other adjacent their sharpened cutting edges 12, thus toshield and protect the blades against accidental dulling lVhen, however,it is desired to use the sharpener, the blades 10 may be swung upon thepivot elements 8 so as to open a notch 14- at either side of thesharpener, the device being adapted for use by persons who are lefthanded as well as by those who are right handed. It is to be observed,noting particularly Fig. 3, that one cutting notch always is closed andit is impossible to dull accidentally, those portions of the bladeswhich a not in use.

The bed plate 1 exercises a double function in that it constitutes onemember of a two-part, blade holding flange and constitutes as well, apart of the handle 3. The support 5 exercises two functions, in that itserves to withhold the device when in use and serves also as the othermember of the two-part clamp above mentioned.

Especial attention is directed to the fact that the arched support 5extends longitudinally of the handle 3, beneath the bed plate 1, and nottransversely of the handle 3 beneath the bed plate 1. Owing to thisconstruction the legs 6 are located directly below the handle 3 and onesingle pairof legs is made efficient to support the device, whether thesame be used right handed or left handed. It is to be observed, further,that by this construction,'the legs 6 do not lie beneath the cuttingnotch 14. If the support 5 extended transversely of the handle 3 beneaththebed plate 1, but one of the legs 6 at a time would serve as asupport, and the other leg 6 wouldbe located directly beneath the notch14:. Then, in order that the edge of the'knife, when drawn through thecutting notch l l, might not strike the adjacent leg 6, it would benecessary to notch or cut away said leg adjacentits lower edge. No suchconstruction is necessary in, the present invention, the legs 6 at alltimes lying upon opposite sides of the notch 14 and out of the way ofthe edge of the knife which is being sharpened.

It will be understood that in practical operation, referringparticularly to Figs. 2 and 3, the device, when in use, is swung overuntil it is supported by the legs 6, the handle 3 and the rear portionsof the blades 10 (or by the rear edge of the bed plate 1 if the blades10, measured along their edges 12 are not quite so large as shown in thedrawings). Under such circumstances, the bed plate 1 is disposed at anangle to the vertical, and the knife or other tool which is to besharpened is drawn through the notch 14:.

Having thus described the invention, what is claimed is 1-- g 1. A knifesharpener embodying a bed plate having a handle; an arched supportlocated below the bed plate and extended longitudinally of the handle,the support terminating at its endsin a single pair of legs; a pair ofblades located between the bed. plate and the support and engageddirectly thereby; and a securing device uniting the bed plate with thesupport whereby Copiesof this patent 'may be obtained for the bed plateand the support will form bed plate; combined clamping and pivotelements connecting the bed plate and the support; and a pair of bladeslocated between the bed plate and the support, the

combined clamping and pivot elements extending through the blades; theblades having cutting edges, and being overlapped to protect the cuttingedges of the blades when the cutting'edges of the respective'blades aredisposed in approximate parallelism, the blades being adjustable on thepivot and clamping elements to open a cutting notch between said edgesat either end of the cutting edges.

3. A knife sharpener embodying a bed plate having a handle; an archedsupport located below the bed plate and extended longitudinally of thehandle, the support terminating at its ends in a single pair of legs;combined clamping and pivot elements connecting the bed plateand thesupport;

and a pair of blades'located between the bed plate and the support, thecombined clamping andpivot. elements extending through the blades; theblades having cutting edges and being overlapped when the cutting edgesof the respective blades are disposed in approximate parallelism, theblades being adjustable upon the clamping and pivot elements to open acutting notch between said edges at either end of the cutting edges.

In testimony that we claim the foregoing I as our own, we have heretoaflixed our signatures in the presence of two witnesses.

GEORGE B. N. DOW. JAMES F. UAVANAUGH.

Witnesses:

FRED E. l/VAY, HAROLD W. LovnRN.

five cents each, by addressing the Commissioner of Patents.

Washington, D. C.

